Training - JPA Converter

gistfile1.java

package train;

import java.awt.Color;

import javax.persistence.AttributeConverter;
import javax.persistence.Converter;

@Converter
public class ColorConverter implements AttributeConverter {

 private static final String SEPARATOR = "|";

 /**
  * Convert Color object to a String 
  * with format red|green|blue|alpha
  */
 @Override
 public String convertToDatabaseColumn(Color color) {
  StringBuilder sb = new StringBuilder();
  sb.append(color.getRed()).append(SEPARATOR)
     .append(color.getGreen())
     .append(SEPARATOR)
     .append(color.getBlue())
     .append(SEPARATOR)
     .append(color.getAlpha());
  return sb.toString();
 }

 /**
  * Convert a String with format red|green|blue|alpha
  * to a Color object
  */
 @Override
 public Color convertToEntityAttribute(String colorString) {
  String[] rgb = colorString.split(SEPARATOR);
  return new Color(Integer.parseInt(rgb[0]), 
      Integer.parseInt(rgb[1]),
      Integer.parseInt(rgb[2]), 
      Integer.parseInt(rgb[3]));
 }

}